>> ERIC: WE'VE REACHED THE AUDIENCE PARTICIPATION PART OF THE PROGRAM.

THIS IS WHERE WE ASK A MINNESOTA HISTORY QUESTION AND YOU TELL US THE ANSWER.

TONIGHT'S QUESTION COMES FROM THE MINNESOTA INVENTION FILE.

WE'RE LOOKING FOR A NEW PRODUCT THAT WAS CREATED BY A MINNESOTA COMPANY IN RESPONSE TO A DISCOVERY MADE DURING WORLD WAR II.

THE FIRST VERSION OF THIS PRODUCT WAS INTRODUCED IN 1947.

IT MARKED THE BEGINNING OF A WHOLE NEW INDUSTRY.

OUR QUESTION TO YOU: WHAT WAS INVENTED BY A MINNESOTA COMPANY IN 1947 IN RESPONSE TO DISCOVERY MADE DURING WORLD WAR II?

WE WANT TO HEAR FROM YOU WHETHER YOU ARE CALLING FROM WHITE BEAR LAKE, MISTLETOE CREEK, OR CROSBY, MINNESOTA.

651-229-1430 IS THE NUMBER TO CALL WITH ALL YOUR ANSWERS.

OR YOU CAN ALWAYS SEND US A NOTE AT ALMANAC@TPT.ORG.

RIGHT OR WRONG, THE "ALMANAC" STAFF LISTENS TO AND READS EACH AND EVERY ONE.

THAT NUMBER AGAIN IS 651-229-1430.

BEFORE WE GO, LET'S HEAR ANOTHER SONG BY BRIAN MILLER AND DANNY DIAMOND.

THIS IS A FIDDLE TUNE THAT WAS FOUND ON AN AUDIO TAPE, RECORDED IN THE 1950S BY A ST. PAUL MUSICIAN NAMED TONY DOHERTY.

TAKE IT AWAY, GUYS.

SOME ♪♪ Captioning by: Paradigm Reporting & Captioning www.paradigmreporting.com >> "ALMANAC" IS MADE POSSIBLE BY MEMBERS OF THIS PUBLIC TELEVISION STATION.

SUPPORT IS ALSO PROVIDED BY... GREAT RIVER ENERGY: PROVIDING WHOLESALE POWER TO 27 MINNESOTA ELECTRIC COOPERATIVES.

DELTA DENTAL OF MINNESOTA FOUNDATION: IMPROVING ORAL HEALTH WHILE ADVANCING SOCIAL EQUITIES.

DELTADENTALMN.ORG/TPT.

AND EDUCATION MINNESOTA: THE VOICE FOR PROFESSIONAL EDUCATORS AND STUDENTS THROUGHOUT THE STATE.

MORE AT EDUCATIONMINNESOTA.ORG.

"ALMANAC" IS A PRODUCTION OF TWIN CITIES PBS FOR THE STATIONS OF MINNESOTA PUBLIC TELEVISION ASSOCIATION.